@charset "UTF-8";
/* ==========================================================================
   おうち繁殖図鑑 — サイト全体のスタイル
   --------------------------------------------------------------------------
   ビルド工程は無い。このファイルが本番でそのまま配信される（docs/SPEC.md
   「ビルドレス構成」）。Tailwind は使わない。

   色は必ず :root の CSS 変数を経由すること。配色を変えるときはここだけ直せば
   全体に効く。個別のセレクタに生の色を書かない。

   外部フォントは読み込まない。Web フォント 1 つで数百 KB 増えるうえ描画が遅れ、
   表示速度と SEO に響くため、OS 標準の日本語フォントで組む。
   ========================================================================== */

:root {
    /* --- ベース配色（水中）--- */
    --color-primary: #0e6b8a;
    --color-primary-dark: #08475d;
    --color-primary-light: #3d9dbd;
    --color-primary-pale: #e3f2f8;

    /* アクセントはグッピーの尾のコーラル */
    --color-accent: #f2683c;
    --color-accent-dark: #d24d24;
    --color-accent-pale: #ffeee8;

    --color-bg: #f3fafc;
    --color-card: #ffffff;
    --color-text: #14323d;
    --color-text-muted: #5b7885;
    --color-text-faint: #8aa5b1;
    --color-border: #d6e8ef;
    --color-border-strong: #b3d3e0;

    --color-good: #2a9d8f;
    --color-caution: #e8a33d;
    --color-bad: #c9184a;

    /* --- 影 --- */
    --shadow-soft: 0 1px 2px rgba(14, 107, 138, .06), 0 4px 16px rgba(14, 107, 138, .07);
    --shadow-lift: 0 4px 10px rgba(14, 107, 138, .1), 0 16px 40px rgba(14, 107, 138, .13);
    --shadow-inset: inset 0 1px 3px rgba(14, 107, 138, .09);

    /* --- 寸法 --- */
    --w-content: 76rem;
    --w-prose: 44rem;
    --radius: 14px;
    --radius-lg: 22px;
    --radius-pill: 999px;

    /* --- フォント --- */
    --font-sans: system-ui, -apple-system, "Segoe UI", "Hiragino Sans",
        "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", "Meiryo", sans-serif;
    /* 数値を等幅で揃えるため、和文フォントを避けた別スタックを用意する */
    --font-num: ui-monospace, "SF Mono", "Cascadia Mono", "Roboto Mono", Consolas, monospace;

    --ease-out: cubic-bezier(.22, 1, .36, 1);
}

/* ==========================================================================
   リセット
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
    /* 固定ヘッダにアンカー先が隠れないように */
    scroll-padding-top: 5rem;
}

body {
    margin: 0;
    font-family: var(--font-sans);
    /* palt で和文を詰めて見た目を締める */
    font-feature-settings: "palt";
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img, svg, video { max-width: 100%; height: auto; display: block; }
h1, h2, h3, h4, h5, h6 { line-height: 1.4; margin: 0; font-weight: 700; }
p, ul, ol, dl, figure, table { margin: 0; }
ul, ol { padding: 0; list-style: none; }

a { color: var(--color-primary); text-decoration-thickness: 1px; text-underline-offset: .2em; }
a:hover { color: var(--color-accent-dark); }

/* 押せるものは必ず手のカーソルにする（CLAUDE.md のデザイン規約） */
a, button, summary, label[for], select, [role="button"], [role="tab"] { cursor: pointer; }
button:disabled, [aria-disabled="true"] { cursor: not-allowed; }

button { font: inherit; color: inherit; background: none; border: 0; padding: 0; }
select, input, textarea { font: inherit; color: inherit; }

:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
    border-radius: 4px;
}

/* 数値の等幅表示 */
.num { font-family: var(--font-num); font-feature-settings: "tnum"; font-variant-numeric: tabular-nums; }

/* スクリーンリーダー専用 */
.sr-only {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

/* キーボード操作時だけ現れる本文スキップリンク */
.skip-link {
    position: absolute; top: -100%; left: 1rem; z-index: 200;
    padding: .75rem 1.25rem; background: var(--color-primary); color: #fff;
    border-radius: 0 0 var(--radius) var(--radius); font-weight: 700;
}
.skip-link:focus { top: 0; color: #fff; }

/* ==========================================================================
   レイアウト
   ========================================================================== */

.container { width: min(100% - 2.5rem, var(--w-content)); margin-inline: auto; }
.container--prose { width: min(100% - 2.5rem, var(--w-prose)); margin-inline: auto; }

.section { padding-block: clamp(2.5rem, 6vw, 4.5rem); }
.section--tight { padding-block: clamp(1.75rem, 4vw, 2.75rem); }

.stack > * + * { margin-top: 1rem; }
.stack-lg > * + * { margin-top: 2rem; }

.page-main { min-height: 60vh; }

/* ==========================================================================
   見出し
   ========================================================================== */

.section-head { margin-bottom: 1.75rem; }

.section-title {
    font-size: clamp(1.35rem, 3vw, 1.9rem);
    letter-spacing: .01em;
    display: flex;
    align-items: center;
    gap: .7rem;
}
/* 見出し左のアクセントバー。画像を使わず CSS で作る */
.section-title::before {
    content: "";
    flex: none;
    width: 6px;
    height: 1.15em;
    border-radius: var(--radius-pill);
    background: linear-gradient(180deg, var(--color-primary-light), var(--color-primary));
}

.section-lead {
    margin-top: .6rem;
    color: var(--color-text-muted);
    font-size: .98rem;
}

/* ==========================================================================
   ヘッダー
   ========================================================================== */

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, .88);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    min-height: 4rem;
}

.site-logo {
    display: inline-flex;
    align-items: center;
    gap: .6rem;
    font-weight: 800;
    font-size: 1.06rem;
    color: var(--color-primary-dark);
    text-decoration: none;
    letter-spacing: .01em;
    flex: none;
}
.site-logo:hover { color: var(--color-primary); }

/* ロゴの魚アイコンを CSS だけで作る（画像リクエストを増やさないため） */
.site-logo__mark {
    position: relative;
    width: 30px; height: 30px;
    flex: none;
    border-radius: 50%;
    background: radial-gradient(circle at 32% 30%, var(--color-primary-light), var(--color-primary) 65%, var(--color-primary-dark));
    box-shadow: var(--shadow-soft);
}
.site-logo__mark::after {
    /* 泡 */
    content: "";
    position: absolute; top: 6px; right: 6px;
    width: 6px; height: 6px; border-radius: 50%;
    background: rgba(255, 255, 255, .85);
}

.site-nav { margin-left: auto; }
.site-nav__list { display: flex; align-items: center; gap: .25rem; }

.site-nav__link {
    display: block;
    padding: .5rem .8rem;
    border-radius: var(--radius-pill);
    font-size: .92rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-decoration: none;
    transition: background-color .18s, color .18s;
}
.site-nav__link:hover { background: var(--color-primary-pale); color: var(--color-primary-dark); }
.site-nav__link[aria-current="page"] { background: var(--color-primary); color: #fff; }

/* モバイル: ナビを横スクロールさせる（ハンバーガーの JS を避ける） */
@media (max-width: 820px) {
    .site-header__inner { min-height: 3.5rem; gap: .75rem; }
    .site-nav {
        margin-left: auto;
        overflow-x: auto;
        scrollbar-width: none;
        -webkit-overflow-scrolling: touch;
        mask-image: linear-gradient(90deg, transparent 0, #000 12px, #000 calc(100% - 12px), transparent 100%);
    }
    .site-nav::-webkit-scrollbar { display: none; }
    .site-nav__list { flex-wrap: nowrap; }
    .site-nav__link { white-space: nowrap; padding: .45rem .65rem; font-size: .85rem; }
}

/* ==========================================================================
   ヒーロー（水中の表現を CSS だけで作る）
   ========================================================================== */

.hero {
    position: relative;
    overflow: hidden;
    color: #fff;
    background:
        linear-gradient(180deg, #0a5773 0%, #08475d 45%, #05303f 100%);
    isolation: isolate;
}

/* 水面から差し込む光の筋 */
.hero::before {
    content: "";
    position: absolute; inset: -20% -10% auto -10%;
    height: 90%;
    background:
        conic-gradient(from 200deg at 20% 0%, transparent 0deg, rgba(180, 235, 255, .16) 12deg, transparent 26deg),
        conic-gradient(from 190deg at 52% 0%, transparent 0deg, rgba(180, 235, 255, .12) 9deg, transparent 22deg),
        conic-gradient(from 210deg at 82% 0%, transparent 0deg, rgba(180, 235, 255, .14) 14deg, transparent 30deg);
    animation: caustics 14s var(--ease-out) infinite alternate;
    z-index: -1;
    pointer-events: none;
}

/* 底に向かって暗くする */
.hero::after {
    content: "";
    position: absolute; inset: 0;
    background: radial-gradient(120% 80% at 50% 0%, transparent 40%, rgba(3, 26, 35, .55) 100%);
    z-index: -1;
    pointer-events: none;
}

@keyframes caustics {
    from { transform: translateX(-3%) scaleY(1); opacity: .75; }
    to   { transform: translateX(3%) scaleY(1.12); opacity: 1; }
}

.hero__inner {
    position: relative;
    padding-block: clamp(3rem, 9vw, 6rem);
    max-width: 46rem;
}

.hero__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    padding: .3rem .85rem;
    margin-bottom: 1.1rem;
    border-radius: var(--radius-pill);
    background: rgba(255, 255, 255, .13);
    border: 1px solid rgba(255, 255, 255, .22);
    font-size: .8rem;
    font-weight: 700;
    letter-spacing: .04em;
}

.hero__title {
    font-size: clamp(1.7rem, 5.2vw, 3rem);
    line-height: 1.3;
    letter-spacing: .005em;
    text-wrap: balance;
}
.hero__title em {
    font-style: normal;
    color: #ffd9c7;
    /* 強調語の下に手描き風の下線を敷く */
    background: linear-gradient(transparent 68%, rgba(242, 104, 60, .55) 68%);
}

.hero__lead {
    margin-top: 1.1rem;
    font-size: clamp(.95rem, 2.2vw, 1.08rem);
    color: rgba(255, 255, 255, .82);
    text-wrap: pretty;
}

.hero__actions { margin-top: 1.9rem; display: flex; flex-wrap: wrap; gap: .75rem; }

/* 泡 */
.bubbles { position: absolute; inset: 0; z-index: -1; pointer-events: none; overflow: hidden; }
.bubble {
    position: absolute;
    bottom: -8%;
    border-radius: 50%;
    background: radial-gradient(circle at 32% 30%, rgba(255, 255, 255, .55), rgba(255, 255, 255, .08) 62%);
    border: 1px solid rgba(255, 255, 255, .16);
    animation: rise linear infinite;
}
@keyframes rise {
    from { transform: translateY(0) translateX(0); opacity: 0; }
    12%  { opacity: .8; }
    88%  { opacity: .55; }
    to   { transform: translateY(-115vh) translateX(14px); opacity: 0; }
}

/* ==========================================================================
   ボタン
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    padding: .7rem 1.4rem;
    border-radius: var(--radius-pill);
    font-weight: 700;
    font-size: .95rem;
    text-decoration: none;
    transition: transform .18s var(--ease-out), box-shadow .18s, background-color .18s;
    will-change: transform;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary { background: var(--color-accent); color: #fff; box-shadow: 0 6px 18px rgba(242, 104, 60, .38); }
.btn--primary:hover { background: var(--color-accent-dark); color: #fff; box-shadow: 0 10px 26px rgba(242, 104, 60, .46); }

.btn--ghost { background: rgba(255, 255, 255, .12); color: #fff; border: 1px solid rgba(255, 255, 255, .3); }
.btn--ghost:hover { background: rgba(255, 255, 255, .2); color: #fff; }

.btn--outline { background: var(--color-card); color: var(--color-primary-dark); border: 1px solid var(--color-border-strong); }
.btn--outline:hover { background: var(--color-primary-pale); color: var(--color-primary-dark); }

/* ==========================================================================
   カード
   ========================================================================== */

.card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
}

.card-grid {
    display: grid;
    gap: 1.1rem;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 15.5rem), 1fr));
}

/* 種カード */
.species-card {
    position: relative;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    transition: transform .22s var(--ease-out), box-shadow .22s, border-color .22s;
}
.species-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lift);
    border-color: var(--color-primary-light);
    color: inherit;
}

/* 写真が無くても成立するよう、種ごとの色で塗ったグラデーション帯を出す */
.species-card__visual {
    position: relative;
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, var(--card-accent, var(--color-primary-light)), var(--color-primary-dark));
    overflow: hidden;
}
.species-card__visual::after {
    content: "";
    position: absolute; inset: 0;
    background:
        radial-gradient(circle at 78% 22%, rgba(255, 255, 255, .3), transparent 42%),
        radial-gradient(circle at 22% 82%, rgba(0, 0, 0, .22), transparent 55%);
}
.species-card__img { width: 100%; height: 100%; object-fit: cover; }

.species-card__type {
    position: absolute;
    left: .7rem; bottom: .7rem;
    z-index: 1;
    padding: .2rem .6rem;
    border-radius: var(--radius-pill);
    background: rgba(255, 255, 255, .92);
    color: var(--color-primary-dark);
    font-size: .72rem;
    font-weight: 800;
}

.species-card__body { padding: .95rem 1rem 1.05rem; display: flex; flex-direction: column; gap: .5rem; flex: 1; }

.species-card__name { font-size: 1.06rem; letter-spacing: .01em; }
.species-card__sci { font-size: .74rem; color: var(--color-text-faint); font-style: italic; }
.species-card__answer {
    font-size: .84rem;
    color: var(--color-text-muted);
    line-height: 1.65;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.species-card__meta {
    margin-top: auto;
    padding-top: .6rem;
    border-top: 1px dashed var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .5rem;
    font-size: .76rem;
    color: var(--color-text-muted);
}

/* ==========================================================================
   バッジ
   ========================================================================== */

.badge {
    display: inline-flex;
    align-items: center;
    gap: .3rem;
    padding: .2rem .6rem;
    border-radius: var(--radius-pill);
    font-size: .74rem;
    font-weight: 700;
    white-space: nowrap;
}
.badge--type { background: var(--color-primary-pale); color: var(--color-primary-dark); }
.badge--accent { background: var(--color-accent-pale); color: var(--color-accent-dark); }
.badge--outline { border: 1px solid var(--color-border-strong); color: var(--color-text-muted); }

/* 難易度メーター。数値を点の数で見せる */
.difficulty { display: inline-flex; align-items: center; gap: .35rem; }
.difficulty__dots { display: inline-flex; gap: 3px; }
.difficulty__dot {
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--color-border-strong);
}
.difficulty__dot--on { background: var(--diff-color, var(--color-primary)); }
.difficulty__label { font-size: .74rem; font-weight: 700; color: var(--diff-color, var(--color-text-muted)); }

/* ==========================================================================
   結論ブロック（AEO の肝）
   ========================================================================== */

.quick-answer {
    position: relative;
    padding: 1.3rem 1.4rem 1.3rem 1.5rem;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary-pale), #fff 75%);
    border: 1px solid var(--color-border-strong);
    box-shadow: var(--shadow-soft);
    overflow: hidden;
}
.quick-answer::before {
    content: "";
    position: absolute; left: 0; top: 0; bottom: 0;
    width: 5px;
    background: linear-gradient(180deg, var(--color-primary-light), var(--color-accent));
}
.quick-answer__label {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    font-size: .76rem;
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: .06em;
    margin-bottom: .4rem;
}
.quick-answer__text {
    font-size: clamp(1rem, 2.4vw, 1.16rem);
    font-weight: 700;
    line-height: 1.7;
    text-wrap: pretty;
}

/* ==========================================================================
   本文組版
   ========================================================================== */

.prose {
    line-height: 2;
    letter-spacing: .015em;
}
.prose > * + * { margin-top: 1.15em; }
.prose p { text-wrap: pretty; }
.prose h2 {
    margin-top: 2.2em;
    padding-bottom: .4rem;
    font-size: 1.3rem;
    border-bottom: 2px solid var(--color-border);
}
.prose h3 { margin-top: 1.8em; font-size: 1.08rem; color: var(--color-primary-dark); }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose ul li { list-style: none; position: relative; }
.prose ul li::before {
    content: "";
    position: absolute; left: -1.1em; top: .78em;
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--color-primary-light);
}
.prose ol { list-style: decimal; }
.prose ol li::marker { color: var(--color-primary); font-weight: 700; }
.prose li + li { margin-top: .4em; }
.prose strong {
    font-weight: 700;
    /* マーカー風の下線 */
    box-shadow: inset 0 -.4em 0 var(--color-accent-pale);
}

/* ==========================================================================
   データテーブル
   ========================================================================== */

/* 表は必ずこれで包む。狭い画面で本文ごと横スクロールさせないため。
   列数の少ない表を広いコンテナに置くと横に間延びして対応が読めなくなるので、
   上限も設ける（記事本文の中では main 幅のほうが狭いのでこの値は効かない）。 */
.table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-card);
    max-width: 56rem;
}

.data-table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.data-table th, .data-table td { padding: .7rem .9rem; text-align: left; vertical-align: top; }
.data-table thead th {
    background: var(--color-primary-pale);
    color: var(--color-primary-dark);
    font-size: .78rem;
    font-weight: 800;
    letter-spacing: .03em;
    white-space: nowrap;
}
.data-table tbody tr + tr { border-top: 1px solid var(--color-border); }
.data-table tbody tr:hover { background: #f7fcfe; }

/* 数値列。
   見出しと値の揃えは必ず一致させること。見出しだけ左・値だけ右にすると、
   行数が少ないときに値が遠くへ飛んで、どの見出しの数字か読めなくなる。 */
.data-table .is-num {
    text-align: right;
    font-family: var(--font-num);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}
.data-table thead .is-num { font-family: var(--font-sans); }
/* 中央に置きたい列（バッジ・メーターなど） */
.data-table .is-center { text-align: center; }

/* 仕様表（縦2列）。狭い画面では1列に落とす */
.spec-table { width: 100%; border-collapse: collapse; font-size: .92rem; }
.spec-table th, .spec-table td { padding: .68rem .9rem; text-align: left; }
.spec-table th {
    width: 34%;
    background: #f5fafc;
    color: var(--color-text-muted);
    font-size: .82rem;
    font-weight: 700;
    white-space: nowrap;
}
.spec-table tr + tr { border-top: 1px solid var(--color-border); }

@media (max-width: 640px) {
    .spec-table th, .spec-table td { display: block; width: auto; }
    .spec-table th { border-bottom: 1px dashed var(--color-border); }
    .spec-table td { padding-top: .45rem; }
}

/* ==========================================================================
   パンくず
   ========================================================================== */

.breadcrumbs { padding-block: .8rem; font-size: .78rem; }
.breadcrumbs__list { display: flex; flex-wrap: wrap; align-items: center; gap: .3rem; }
.breadcrumbs__item { display: flex; align-items: center; gap: .3rem; color: var(--color-text-muted); }
.breadcrumbs__item + .breadcrumbs__item::before { content: "›"; color: var(--color-text-faint); }
.breadcrumbs a { color: var(--color-text-muted); text-decoration: none; }
.breadcrumbs a:hover { color: var(--color-primary); text-decoration: underline; }
.breadcrumbs__item[aria-current="page"] { color: var(--color-text); font-weight: 700; }

/* ==========================================================================
   FAQ（details/summary で JS 無しに動かす）
   ========================================================================== */

.faq { border: 1px solid var(--color-border); border-radius: var(--radius); background: var(--color-card); overflow: hidden; }
.faq + .faq { margin-top: .6rem; }
.faq__q {
    display: flex;
    align-items: flex-start;
    gap: .7rem;
    padding: .95rem 1.1rem;
    font-weight: 700;
    font-size: .96rem;
    list-style: none;
    transition: background-color .18s;
}
.faq__q::-webkit-details-marker { display: none; }
.faq__q:hover { background: var(--color-primary-pale); }
.faq__q::before {
    content: "Q";
    flex: none;
    display: grid; place-items: center;
    width: 1.4rem; height: 1.4rem;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    font-size: .72rem;
    font-weight: 800;
}
.faq__q::after {
    content: "";
    flex: none;
    margin-left: auto;
    width: .5rem; height: .5rem;
    border-right: 2px solid var(--color-text-faint);
    border-bottom: 2px solid var(--color-text-faint);
    transform: rotate(45deg);
    transition: transform .22s var(--ease-out);
    margin-top: .35rem;
}
.faq[open] .faq__q::after { transform: rotate(-135deg); }
.faq__a {
    padding: 0 1.1rem 1.1rem 3.2rem;
    color: var(--color-text-muted);
    font-size: .92rem;
    line-height: 1.85;
}

/* ==========================================================================
   注意書き
   ========================================================================== */

.callout {
    padding: 1rem 1.15rem;
    border-radius: var(--radius);
    border-left: 4px solid var(--color-primary-light);
    background: var(--color-primary-pale);
    font-size: .9rem;
    line-height: 1.8;
}
.callout--warn { border-left-color: var(--color-caution); background: #fff8ec; }
.callout--danger { border-left-color: var(--color-bad); background: #fff0f3; }
.callout__title { font-weight: 800; margin-bottom: .3rem; display: flex; align-items: center; gap: .4rem; }

/* ==========================================================================
   フッター
   ========================================================================== */

.site-footer {
    margin-top: 4rem;
    padding-block: 2.5rem 2rem;
    background: var(--color-primary-dark);
    color: rgba(255, 255, 255, .7);
    font-size: .86rem;
}
.site-footer__grid {
    display: grid;
    gap: 2rem;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 12rem), 1fr));
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, .14);
}
.site-footer__heading { color: #fff; font-size: .82rem; letter-spacing: .06em; margin-bottom: .7rem; }
.site-footer a { color: rgba(255, 255, 255, .72); text-decoration: none; }
.site-footer a:hover { color: #fff; text-decoration: underline; }
.site-footer__list li + li { margin-top: .4rem; }
.site-footer__bottom { padding-top: 1.5rem; display: flex; flex-wrap: wrap; gap: .75rem 1.5rem; justify-content: space-between; font-size: .78rem; }

/* ==========================================================================
   演出
   ========================================================================== */

/* スクロールで下から現れる。JS が無い環境では .reveal を付けないので常時表示 */
.reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity .7s var(--ease-out), transform .7s var(--ease-out);
}
.reveal.is-in { opacity: 1; transform: none; }

/* 演出を切る設定の人には一切動かさない */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: .001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .001ms !important;
    }
    .reveal { opacity: 1; transform: none; }
    .bubbles { display: none; }
}

/* ==========================================================================
   繁殖サイクル図
   --------------------------------------------------------------------------
   縦のタイムライン。段階の色は config/fish.php の stages が正本で、
   インラインの --stage-color として流し込む。
   横並びにすると段階数が増えたときにスマホで破綻するため、縦で統一する。
   ========================================================================== */

.cycle { position: relative; padding-left: 2.4rem; }

/* 段階をつなぐ縦線 */
.cycle::before {
    content: "";
    position: absolute;
    left: .82rem;
    top: .6rem;
    bottom: .6rem;
    width: 2px;
    background: linear-gradient(180deg, var(--color-primary-light), var(--color-accent));
    border-radius: 2px;
}

.cycle__item { position: relative; padding-bottom: 1.1rem; }
.cycle__item:last-child { padding-bottom: 0; }

.cycle__marker {
    position: absolute;
    left: -2.4rem;
    top: .15rem;
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: var(--stage-color, var(--color-primary));
    color: #fff;
    font-size: .74rem;
    font-weight: 800;
    box-shadow: 0 0 0 4px var(--color-bg);
}

.cycle__head { display: flex; flex-wrap: wrap; align-items: baseline; gap: .5rem; }
.cycle__stage { font-weight: 800; font-size: .78rem; color: var(--stage-color, var(--color-primary)); }
.cycle__title { font-size: 1rem; font-weight: 700; }
.cycle__days {
    margin-left: auto;
    font-family: var(--font-num);
    font-variant-numeric: tabular-nums;
    font-size: .8rem;
    font-weight: 700;
    color: var(--color-text-muted);
    white-space: nowrap;
}
.cycle__desc { margin-top: .3rem; font-size: .88rem; color: var(--color-text-muted); line-height: 1.8; }

/* 段階の長さを帯の幅で見せる。数値だけより期間の重みが直感で分かる */
.cycle__bar {
    margin-top: .5rem;
    height: 6px;
    border-radius: var(--radius-pill);
    background: var(--color-border);
    overflow: hidden;
}
.cycle__bar span {
    display: block;
    height: 100%;
    border-radius: var(--radius-pill);
    background: var(--stage-color, var(--color-primary));
}

/* ==========================================================================
   繁殖手順
   ========================================================================== */

.step { scroll-margin-top: 5rem; }
.step + .step { margin-top: 1rem; }

.step__head { display: flex; align-items: center; gap: .7rem; margin-bottom: .6rem; }
.step__no {
    flex: none;
    display: grid;
    place-items: center;
    width: 2rem; height: 2rem;
    border-radius: 50%;
    background: var(--stage-color, var(--color-primary));
    color: #fff;
    font-family: var(--font-num);
    font-weight: 800;
    font-size: .85rem;
}
.step__title { font-size: 1.05rem; }
.step__meta { margin-left: auto; display: flex; gap: .4rem; flex-wrap: wrap; }
.step__body { font-size: .93rem; line-height: 1.95; color: var(--color-text); }

.note {
    margin-top: .7rem;
    padding: .6rem .85rem;
    border-radius: 8px;
    font-size: .85rem;
    line-height: 1.75;
    display: flex;
    gap: .5rem;
}
.note__label { flex: none; font-weight: 800; }
.note--tip { background: var(--color-primary-pale); color: var(--color-primary-dark); }
.note--warn { background: #fff8ec; color: #8a5a1a; }

/* ==========================================================================
   採算
   ========================================================================== */

.econ-grid {
    display: grid;
    gap: .8rem;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 11rem), 1fr));
}

.econ-tile {
    padding: 1rem 1.1rem;
    border-radius: var(--radius);
    background: var(--color-card);
    border: 1px solid var(--color-border);
}
.econ-tile__label { font-size: .76rem; font-weight: 700; color: var(--color-text-muted); }
.econ-tile__value {
    margin-top: .3rem;
    font-family: var(--font-num);
    font-variant-numeric: tabular-nums;
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--color-primary-dark);
    line-height: 1.3;
}
.econ-tile__unit { font-size: .8rem; font-weight: 700; color: var(--color-text-muted); }
.econ-tile__note { margin-top: .3rem; font-size: .72rem; color: var(--color-text-faint); line-height: 1.6; }

/* 相性 */
.compat { display: inline-flex; align-items: center; gap: .35rem; font-weight: 700; font-size: .8rem; white-space: nowrap; }
.compat::before { content: ""; width: .6rem; height: .6rem; border-radius: 50%; background: currentColor; }
.compat--good { color: var(--color-good); }
.compat--caution { color: var(--color-caution); }
.compat--bad { color: var(--color-bad); }

/* 出典 */
.sources {
    font-size: .8rem;
    color: var(--color-text-muted);
    line-height: 1.9;
}
.sources__body { white-space: pre-wrap; }

/* ==========================================================================
   種ページのヒーロー（写真 + 見出し）
   --------------------------------------------------------------------------
   写真と文章を左右に並べて画面幅を使い切る。
   ========================================================================== */

.species-hero {
    background: linear-gradient(180deg, var(--color-primary-pale), transparent);
    border-bottom: 1px solid var(--color-border);
    padding-block: clamp(1.5rem, 4vw, 2.5rem);
}

.species-hero__grid {
    display: grid;
    gap: clamp(1.25rem, 3vw, 2.5rem);
    align-items: center;
    grid-template-columns: 1fr;
}
@media (min-width: 860px) {
    .species-hero__grid { grid-template-columns: 1.05fr .95fr; }
}

.species-hero__badges { display: flex; flex-wrap: wrap; gap: .4rem; margin-bottom: .8rem; }

.species-hero__title {
    font-size: clamp(1.6rem, 4.5vw, 2.4rem);
    letter-spacing: .01em;
    text-wrap: balance;
}
.species-hero__sci {
    margin-top: .3rem;
    color: var(--color-text-faint);
    font-style: italic;
    font-size: .88rem;
}

.species-hero__figure { margin: 0; }
.species-hero__img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lift);
}
/* 出典表示。CC ライセンスの表示義務を果たすため、必ず写真とセットで出す */
.species-hero__credit {
    margin-top: .5rem;
    font-size: .68rem;
    color: var(--color-text-faint);
    line-height: 1.5;
}
.species-hero__credit a { color: inherit; }

/* ==========================================================================
   記事レイアウト（本文 + 追従サイドバー）
   --------------------------------------------------------------------------
   本文は読みやすい幅（44rem 前後）に保ちたいが、コンテナ幅は 76rem ある。
   本文だけを置くと右が大きく余るので、目次を追従させて幅を使い切る。
   ========================================================================== */

.article-layout {
    display: grid;
    gap: clamp(1.5rem, 4vw, 3rem);
    align-items: start;
    /* 本文は 46rem までに抑える。コンテナ幅(76rem)いっぱいに広げると日本語で
       1行50文字を超えて読みづらくなる。快適なのは35〜45文字。 */
    grid-template-columns: minmax(0, 46rem);
    justify-content: center;
    padding-block: clamp(1.5rem, 4vw, 2.5rem);
}
@media (min-width: 1060px) {
    /* 本文 + 目次。合計 65rem 前後をコンテナ内で中央に置く */
    .article-layout { grid-template-columns: minmax(0, 46rem) 16rem; }
}

/* minmax(0, ...) と組み合わせて、長いテーブルがグリッドを押し広げないようにする */
.article-main { min-width: 0; }
.article-main > section + section { margin-top: clamp(2rem, 5vw, 3.25rem); }

.article-side { display: none; }
@media (min-width: 1060px) {
    .article-side {
        display: block;
        position: sticky;
        top: 5rem;
    }
}

/* --- 目次 --- */
.toc {
    padding: 1.1rem 1.2rem;
    border-radius: var(--radius);
    background: var(--color-card);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
}
.toc__title {
    font-size: .74rem;
    font-weight: 800;
    letter-spacing: .08em;
    color: var(--color-text-muted);
    margin-bottom: .7rem;
}
.toc__list { display: grid; gap: .1rem; }
.toc__link {
    display: block;
    padding: .38rem .6rem;
    border-radius: 8px;
    font-size: .84rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-decoration: none;
    border-left: 2px solid transparent;
    transition: background-color .16s, color .16s, border-color .16s;
}
.toc__link:hover { background: var(--color-primary-pale); color: var(--color-primary-dark); }
/* 読んでいる位置。site.js が付ける */
.toc__link.is-active {
    background: var(--color-primary-pale);
    color: var(--color-primary-dark);
    border-left-color: var(--color-primary);
}

/* サイドバーの小さな要約カード */
.side-card {
    margin-top: .9rem;
    padding: 1rem 1.1rem;
    border-radius: var(--radius);
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    color: #fff;
    box-shadow: var(--shadow-soft);
}
.side-card__title { font-size: .72rem; font-weight: 800; letter-spacing: .08em; opacity: .8; margin-bottom: .6rem; }
.side-card__row { display: flex; align-items: baseline; justify-content: space-between; gap: .6rem; }
.side-card__row + .side-card__row { margin-top: .5rem; padding-top: .5rem; border-top: 1px solid rgba(255,255,255,.16); }
.side-card__label { font-size: .74rem; opacity: .78; }
.side-card__value {
    font-family: var(--font-num);
    font-variant-numeric: tabular-nums;
    font-size: .95rem;
    font-weight: 800;
    white-space: nowrap;
}

/* --- 本文中の図版 --- */
.figure { margin: 0; }
.figure__img {
    width: 100%;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
}
.figure__caption {
    margin-top: .45rem;
    font-size: .78rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}
.figure__credit { font-size: .68rem; color: var(--color-text-faint); }
.figure__credit a { color: inherit; }

/* ==========================================================================
   フォーム / 採算シミュレーター
   ========================================================================== */

.field { display: grid; gap: .3rem; }
.field__label { font-size: .78rem; font-weight: 700; color: var(--color-text-muted); }
.field__hint { font-size: .7rem; color: var(--color-text-faint); line-height: 1.5; }

.input, .select {
    width: 100%;
    padding: .55rem .7rem;
    border: 1px solid var(--color-border-strong);
    border-radius: 8px;
    background: var(--color-card);
    font-size: .92rem;
    transition: border-color .16s, box-shadow .16s;
}
.input:focus, .select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-pale);
}
.input.is-num { font-family: var(--font-num); text-align: right; }

/* ネイティブの矢印を消して自前の三角を置く（見た目を揃えるため） */
.select {
    appearance: none;
    -webkit-appearance: none;
    padding-right: 2rem;
    background-image: linear-gradient(45deg, transparent 50%, var(--color-text-muted) 50%),
                      linear-gradient(135deg, var(--color-text-muted) 50%, transparent 50%);
    background-position: calc(100% - 15px) calc(50% + 2px), calc(100% - 10px) calc(50% + 2px);
    background-size: 5px 5px, 5px 5px;
    background-repeat: no-repeat;
}

.field-grid {
    display: grid;
    gap: .9rem;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 9.5rem), 1fr));
}

.range-row { display: flex; align-items: center; gap: .7rem; }
.range {
    flex: 1;
    accent-color: var(--color-primary);
    cursor: pointer;
}
.range-value {
    flex: none;
    min-width: 3.2rem;
    text-align: right;
    font-family: var(--font-num);
    font-variant-numeric: tabular-nums;
    font-weight: 800;
    color: var(--color-primary-dark);
}

/* 結果 */
.result {
    padding: 1.3rem 1.4rem;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    color: #fff;
    box-shadow: var(--shadow-lift);
}
.result__label { font-size: .74rem; font-weight: 700; opacity: .8; }
.result__profit {
    font-family: var(--font-num);
    font-variant-numeric: tabular-nums;
    font-size: clamp(1.8rem, 5vw, 2.6rem);
    font-weight: 800;
    line-height: 1.2;
    margin-top: .2rem;
}
.result__profit.is-loss { color: #ffc9c9; }
.result__profit.is-gain { color: #b8f5d0; }
.result__verdict { margin-top: .5rem; font-size: .88rem; line-height: 1.7; opacity: .92; }

.result__breakdown { margin-top: 1rem; padding-top: .9rem; border-top: 1px solid rgba(255,255,255,.18); }
.result__row { display: flex; align-items: baseline; justify-content: space-between; gap: .8rem; font-size: .84rem; }
.result__row + .result__row { margin-top: .45rem; }
.result__row span:last-child { font-family: var(--font-num); font-variant-numeric: tabular-nums; font-weight: 700; white-space: nowrap; }
.result__row--total { margin-top: .6rem; padding-top: .6rem; border-top: 1px solid rgba(255,255,255,.18); font-weight: 800; }

.sim-grid { display: grid; gap: 1.2rem; align-items: start; grid-template-columns: 1fr; }
@media (min-width: 900px) { .sim-grid { grid-template-columns: 1.25fr .75fr; } }
@media (min-width: 900px) { .sim-result-wrap { position: sticky; top: 5rem; } }